Nonconvex Morphology of Metallic Copper Obtained via Nonclassical Crystallization of Copper Hydride

Abstract

Copper particles with a desert rose morphology and high surface area were obtained via decomposition of a copper hydride whose particles possesses a similar shape. Copper hydride was synthesized by the reaction between copper sulfate and hypophosphorous acid at 50 degrees C. The different reaction steps of the copper hydride formation were monitored by two time-dependent techniques: in situ photon cross-correlation spectroscopy and ex -situ transmission electron microscopy. At the initial stage of the reaction, emulsion droplets of a particular size were formed, followed by the growth and agglomeration of copper hydride crystallites in the confinement of these droplets. The final structure consists of roselike shaped particles with an average size of about 217 +/- 53 nm arranged into chains. The surface area of these particles was estimated to be 41 +/- 8 m(2)/g. The nucleation and growth of the copper hydride occur via a nonclassical crystallization pathway.

Published in

Crystal Growth and Design
2019, Volume: 19, number: 9, pages: 5275-5282 Publisher: AMER CHEMICAL SOC

SLU Authors

• Norrfors, Karin

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    
  • Royal Institute of Technology (KTH)

UKÄ Subject classification

Physical Chemistry


Publication identifier

DOI: https://doi.org/10.1021/acs.cgd.9b00689

Permanent link to this page (URI)

https://res.slu.se/id/publ/101973